Program to find length of string without using predefined functions

//Program to find length of string without using predefined functions #include<stdio.h> #include<conio.h> int strlength(char []); main() { char str1[20],str2[20]; int i,temp,j; // clrscr(); printf("Enter string 1 : \n"); gets(str1); temp=strlength(str1); printf("length=%d",temp); getch(); } int strlength(char str1[]) { int i=0; while(str1[i]!='\0') i++; return i; }